Contribution of Pass-by Noise Sources with Acoustic Holograph and Dynamic Transfer Path Model

摘要

A dynamic transfer path model was used to describe the relation between the sources on the vehicle and the test point on the ground for pass-by test. The noise signals both from the vehicle and the pass-by test were simultaneously recorded with a wireless device. The Tikhonov regularization method was described. The contribution of the pass-by noise was further analyzed and visualized with acoustic holograph. Finally, the contribution of a commercial vehicle is checked with the proposed method.